Practical completion and the final construction invoice in Belgium

Completion is a decision point, not just a date

A project can be physically quiet while its commercial record remains open. Unapproved change orders, missing test certificates, unresolved punch-list items and unbilled work all affect whether a final invoice is ready. Treat practical or provisional completion as a controlled handover event rather than the day the crew leaves.

Belgian rules differ by contract and project type. Official FPS Finance information on building and the Breyne Law describes a specific protected housing framework with provisional and final acceptance stages. Public procurement has its own documents and guarantee rules. Check the actual contract and obtain legal advice when acceptance has legal consequences.

Build a close-out register

Before preparing the final invoice, list every item that can change the commercial balance:

• original contract amount;
• approved change orders;
• work completed but not yet approved;
• previous advance and progress invoices;
• credit notes or corrections;
• materials returned or transferred;
• open defects and agreed reservations;
• contractual retention or guarantee records;
• customer-supplied items;
• final documentation still due.

Give each item an owner, amount or impact, evidence and next date. “Discussed on site” is not a status.

Separate defects from completed billable work

A punch-list item does not always mean the whole project is unbillable, and an issued invoice does not prove the customer accepted every item. Record what the parties agreed: which work is accepted, which reservation remains, how it will be corrected and whether any amount is held pending that correction.

Use signed reports, dated photographs, approved measurements and change-order documents as project evidence. Avoid hiding disputed work in a broad final line. A clear invoice can be matched back to the accepted scope.

Reconcile earlier invoices

Calculate the final amount from one billing schedule. Start with the approved contract and changes, subtract credits and all amounts already invoiced according to their correct treatment, then identify the remaining amount. Check that advance invoices, progress invoices and payments are not confused.

Have a second person verify customer details, VAT treatment, project reference and arithmetic. When the VAT or correction treatment is uncertain, ask the accountant before issuing the document. Do not overwrite an earlier invoice to make the final balance look correct.

Complete the handover evidence

Collect the documents the contract requires: acceptance report, manuals, test or inspection records, as-built information, warranty details and the agreed defect list. Give the customer one index rather than a series of unrelated emails.

Record the date the package was shared, the recipient and any response. If final acceptance or release occurs later, create a future task now with its condition and owner.

Close project and receivables together

After issuing the final invoice, verify delivery status, payment allocation and remaining retention separately. The project should show whether it is operationally complete, financially invoiced, paid and finally accepted. Those are related but different states.

Use the digital handover guide for the document package and construction progress billing for the earlier billing stages. To connect scope, project evidence and invoicing, explore Enfin.